Antislipping device for wheels.



J. C. MOLEAN;

ANTISLIPPING DEVICE FOR WHEELS.

' APPLICATION FILED FEB. 14, 1912.

Patented Sept. 15. 1914.

chain in such manner inallv PATENT cr erion JOHN G. MULEAN, F LAKEWOQD,OHIQ.

ANTISLIPPING DEVICE 39R WHEELS.

LMQESL Specification of Letters Patent.

Patented Sept. 15., 1914.

Application filed February 14, 1912. Serial No. 677,517.

b all whom it may concern.

Be itknown that 1, JOHN (J. liLcLnAn, a citizen of the United States.residing at Lakewood, in thecounty of Cuyahoga. and State of Ohio, haveinvented a certain new and useful Improvement in Antisliiiiping Devicefor Wheels. of which the following is a full, clear, and exactdescription. This invention relates to devices for use upon vehiclewheels to prevent the skidding.

of the wheels and in general to provide traction between the wheels andground, when traction'is needed. More particularly the device isintended for use upon the heavier rubber tired vehicles, as motortrucks. and the object is to provide a traction device of simpleconstruction and at the same time secure the strength necessary towithstand the strains to which the device is subjected. and further toprovide a device which will not cut. the tire upon which it is used.

Generally speaking. the invention comprises the elements andcombinations thereof forth in the accompanying claims.

Reference should be had to the accompanying drawings forming a part ofthis specification in which- Figure 1 is a sectional elevation of aportion'of a wheel spoke, rim and tire, showing the traction devicesecured thereto; Fig. 2 is a reduced horizontal section through a spokeand the support or clamp for the device; Fig. 3 is a side elevation of awheel showing one of the devices in position.

The device herein shown is adapted for use upon various types of wheelsand tires,

but. for purposes of illustration, the draw ing discloses the some inuse with a double solid tire tread, although it will be apparent that asingle tread tire may use the device withequal facility.

Heretofore When using individual cross chains extending around a tirefor the purpose of producing traction, ithas been the usual practice tofasten the ends of each that the chain is held tight against the tireand has very limited movement along the tread.

The traction device of this invention comprises a chain extendingtransversely of the tire, the chain being so mounted that 1101 it.occupies a position upon the tire n an ance-of its fastening points. andwhen the Wheel is moving and the chain is in action between Wheel androad, the

l l i l gage with recesses formed in the base of the tires, all of.which construction old and well known. Y

hastened upon the spoke. l, is a support or two-part lamp coin irisingmembers 7 and These members 7 and dare formed with projecting arms 5)and which ex tend around the spoke. Each of the members 7 and 8 isformed with a boss 12, the same beii'ig provided with an opening. andthrough the :ilined openings oil-the bosses upon the memhers 7 and 8extends suitable securing meuns. such as ev bolt. represented at 13.Above the boss l2'is another boss 14:, through which is an opening.l.he'hosses upon the members 7 and 8 have the openings therethrrnigh inalinelnent. and the opening in the ho: s 14 provides a journal for ashort. shaft lo. lhis shaft extends bevond the bosses and upon the endsthere are mounted rernofvahle arms 16 and 17. lileelns are provided forsecuring the arms against slipping oil of the ends of the. Sllifi thismeans being such as to permit the ro ation of the arms upon the shaft.As an illustration of such means, I have shown the shaft 15 as providedwith grooves 18. Through the portion of the arm. 16 surrounding theshaft, there is an opening in which is mount ed a set screw 19. The setscrew is formed with a spherical cavity at the end thereof eand withinthe cavity is a ball 20, the hull being fixed Within the groove 18 whenthe set SC1'8W l9 is tightened. This construction prevents the ends ofthe shat ting the arms to rotate about the shalt.

Surrounding the shaft 15 upon the opposite sides of the bosses 1st eresprings These springs are coiled upon the shaft, and their opposite endsare secured upon the bosses l4.- and the urine it? and ii". The swingsunder such tension that they Throw the outer ends of the arms 1% endThese plates are. termed with pro ecting flanges which en-,'

iii

17 int-0 2i {/OSlUOIl in arlvence of the pivotal axis upon which theyare mounted, and when the device 'plecetl upon a vehicle wheel, it isplaced in such position that the arms are advanced in the direction inwhich the vehicle wheel is to more, when moved in its normal forward.direction.

Upon ends of the arms there is cnrecl the opposite ends of a chair thechain cxtencling across or misrerscly of the tire. The chain hereinshown is double strand interlinked chain. and such a chain will neverpresent :1 row of linlr to the tir That is to say, there will always bea plurality of links in engagement with the tire, and. thereby preventthe cutting of the tire by the cl gains, as ould be the case if 2*single strand chain were used.

The levers 16 ancl'li' are usually spaced so that they lie against or1'18E1.P tl18 siclcs of the, telly of the wheel. In this we when astrain comes upon the chain, which would tend to bend the arms 16 and17, this strain is in part borne by the felly' oi the wheel because ofthe contact between the arms and the telly.

Under the action of the spring, the chain is always thrown forward inthe direction in'which the wheel rotating. and the :.!.C tion is suchthat the chain is normally held upon the tire of the wheel is cleashownin Fig 3. Wl'ien the wheel is rr hing over aroecl and the tractionbetween the tire and the road is sullicient to propel the vehicle, thechains really perform no function. When however, the traction hetwecnthe tire and roacl is not snliicicnt and there is a tendency towardslipping, then when a chain passes between the wheel and vehicle, thechain furnishes the necessary traction. Under such circumstances, the

chain usually moves from its position, {is

shown in '3, to position somewhat in themear of 'thnt shown.llhismoveinent s permitted lay the turning oi the arms S the shaft 15against the act 21. i vhen, however, the chain and 17 upon of the springhas passed from hctwcen the contact with the tire s l the road, thechain forwsrcl to again occilpy the tion show-'11 in l 3.

in "QYTICUCE, number of these traction devices will be used upon awheel, am it will thus he seen that 2-. single chain is sillijectecl tothe strain incident to proclucin the traction oetwccn the road anrl thewl only for short period of time and f that the chain while producingthe irsction, may more against the resisting action of the spring and inthis manner the strain is considerably rethicezl.

Attention is 'cnlletl to the action of the chain 'QpOIl t tire in thatit pmcticelly no cutting action. The chain is not held in l n V. I

forward upon the tire ll! 1 trnnsvcrscl i he secured n on a pom a singleposition upon the tire, and. although the springs will throw the chainto aforward position each time they act, yet the chain always mores mo eor less from this position noon the tire, a ninst the action of thesprings, when the ,min is in contact with the roml. 'lt this fact thatQZLCll chain when in action may more ver fair sizcil portion o the tiretrend sncl is not confined or held to a single position which gives itthis particular advantir it will he apparent that modifications may l emzulc or the pre structure herein shown. without (leper from the spiritf the invention.

Having thus described my invention, what I claim is:

1. In a traction device for vehicle wheels, the con'iliinntion with achain mlnpterl to extend transversely over t tire, and means forsecuring the emls of the chain upon the wheel, said elm-in being ofgreater length than the transverse length of the tire, where by thechain may he IDO'VQll along ll restricted portion of the tread of theire when the chain is between the wheel and. the road, of meansoperntivcly connected with the chain and the wheel acting to throw theclm' 1 the direction in. rotation of the tire win-n the chain pa: frombetween the rozul uml the lire.

Q. in 2:. U'ziCllOil device l'or vehicle wheels, the coinl ination ofthe chain swimming of the tire, means 'l'or s s 'inr the curls of thechain upon the whee silient means opcrniircly conncctml chain and thewheel, the ssirl. chain )l?llgreater trsnsvcr g/ it chun the whereby theCllillii lllfl he moved 12;;

licnt means along" Llic wheel the action oi tli i. stricted port I? swhen the chain \ici-n the wheel and the road, the suirl resilient znennsacting to throw the chain forward upon. the tire in the direction i therotation 1c wheel when the c inic pa iii-cm wheel and the reed.

In u traction (i the combine. ion with ice ii-n r --iclc wheels :1support mlzipml to ion oi the wn Jog Yi'l' the lire [*"lilSK," I

i r scouring (WINE-ill]! owls cl? opera-- wheel chain p: thereof n thechain to tivcly cormec for normally u g the tire oi t i in the normal(llI'QCLiOII of rotation ofthc c l. in a traction clcvice forw'ehiclcwheels, the combination with a support adopted to be secured upon a.portion of the wheel. {L chain passing over the tire transverselythereof, "means for securing the opposite ends of the chain to thesupport. c-E resilient inc-ans opcratively connected with the chain andthe support and normally urging the said spring to one of said, armssubstantially as described.

chain forward iipon the tire of the wheel in the normal direction ofrotation the Wheel I 5. In a traction device for use upon vehicleWheels, the combination.with a chain extending transversely of the tire,means for securing; the enogs or the chem upon the Wheel, of it spri-uoperatively secured to the chain and whee said chain being of greaterlength than the transverse length of the tire whereby the chain may hemoved the action of the spring along :i restricted portion of. the treadof the wheel when the chain is between the Wheel and the road,

sting to throw the chain forward upon the tire is the direction ofrotation of the tire when the chain passes from between the wheel androad.

Ina-traction device for use upon vehi cie Wheeis, thecombination with asupport edapted to be secured upon tie Wheelya chain passing over thetire transversely thereof and of greater length then the transverselength or" the tire, arms to which the ends 01" the'chein -are connectedmounted. upon the said igort, said arms being free parallel with theplane to more in e plane oi the ivheel, a. 'spring operativelyconnected.

and to the support,

7. A traction device for use upon vehicle wheels comprising :i sepportadopted toibe secured neon wheeh 5L shaft carried by against.

than the tire,

support, errns mounted moon t is said shaft, means for securing saidarms to the shaft so that the arms may rotate upon the shaft, 3 springsurrounding the shuit and secured to the support and the arms, a chain.

extending across the tire transversely thereof, the opposite and of saidchain being so cured to-thc said arms.

8. in a traction device for vehicle wheels, the combination of a chainextending transversel-y of the tire, means for securing the ends of thechain upon the wheel, of tortionally actuated means to throw the chainforward upon the tire in the direction of forward rotation thereofoperatively connected to the chain and the Wheel, the said chain beingof greater transverse length whereby the chain is normeily caused toengage the tire ahead of the position occupied when the chain is actedupon by centrifugal force alone.

9. In a traction device for use upon vehicle Wheels, the combination ofe chain extending transversely or" the tire, arms pivoted in the planeof the Wheel and rotatable bodily with said Wheel, a chain seemed tosaid arms, and means 6 and returning said itiIIlS to'a given angularposition relative to the Wheel.

in testimony whereof, I hereunto affix my signature in the presence oftwo Witnesses.

JOHN C. MCLEAN Witnesses for normally holdin to

